//
//  MainTabBar.swift
//  SinaWeibo
//
//  Created by 王鹏 on 16/4/14.
//  Copyright © 2016年 heihei. All rights reserved.
//

import UIKit

class MainTabBar: UITabBar {
    override init(frame: CGRect) {
        super.init(frame: frame)
        setUpUI()
    }

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        setUpUI()
    }
    
    private func setUpUI() {
        addSubview(composeBtn)
    }
    
    override func layoutSubviews() {
        super.layoutSubviews()
        let w = self.bounds.width/5
        let h = self.bounds.height
        let rect = CGRect(x: 0, y: 0, width: w, height: h)
        
        var index: CGFloat = 0
        for subview in subviews {
            if subview.isKindOfClass(NSClassFromString("UITabBarButton")!){
            subview.frame = CGRectOffset(rect, w * index, 0)
            index += index == 1 ? 2 : 1
            }
        }
         composeBtn.frame = CGRectOffset(rect, w * 2, 0)
//    bringSubviewToFront(composeBtn)
//        addSubview(composeBtn)
    }

    lazy var composeBtn: UIButton = {
        let btn = UIButton()
        
        //设置按钮
        btn.setBackgroundImage(UIImage(named: "tabbar_compose_button"), forState: UIControlState.Normal)
        btn.setBackgroundImage(UIImage(named: "tabbar_compose_button_highlighted"), forState: UIControlState.Highlighted)
        
        btn.setImage(UIImage(named: "tabbar_compose_icon_add"), forState: UIControlState.Normal)
        btn.setImage(UIImage(named: "tabbar_compose_icon_add_highlighted"), forState: UIControlState.Highlighted)
        
        return btn
        }()
    
}



